SOHC.co.uk Forums > CB350/400

Rebore costs

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llessur:
I have just had a quote fore boring my 400 barrels to 54.5mm for a big bore conversion. They said £40 per cylinder.
I just wanted to check this was reasonable as I have not done this before. What do you think?

kevski:
Nothing wrong with that.

Zunspec:
It is in the ball park.  Steve at Pistonbroke in Bristol charges approx £30/barrel so may be a bit cheaper.  The handy thing is if you make an appointment he will do the job while you wait. He's been doing it for 40+ years so he knows what he doing.

Cheers  Geoff

Trigger:
£40 is cheap, seeing it is multiple cuts and a few times they have to re-set the boring bar.

llessur:
Thanks everyone. I took them in this morning. My only concern is that there is not going to be a great deal of wall thickness left at the bottom of each sleeve and the loss of any usable chamfer may mean a faff with the rings. Just an idea but is it possible to sick two pistons in the barrel first then just fit the gudgeon pins rather than attempting all four piston whilst lowering the cylinders ?

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